The scope of business includes general projects: technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; electronic product sales; wholesale of electronic components; retail of electronic components; instrument sales; optical instrument sales; electrical instrument sales; supply and application of instrument sales; specialized environmental monitoring instrument sales; intelligent instrument sales; ecological environment monitoring and testing instrument sales ; specialized electronic equipment sales；maintenance of electronic and mechanical equipment (excluding special equipment)；sales of mechanical equipment；sales of environmental protection specialized equipment；sales of specialized electronic materials；software sales；chemical product sales (excluding licensed chemical products)；furniture sale ； furniture installation and repair services ； electrical equipment repair； general equipment repair； sales agency; domestic trade agency (except for projects that require approval according to law, independently carry out business activities based on the business license).